General Electric Research Laboratory was the first industrial research facility in the United States. Established in 1900, the lab was home to the early technological breakthroughs of General Electric and created a research and development environment that set the standard for industrial innovation for years to come. It developed into GE Global Research that now covers an array of technological research, ranging from healthcare to transportation systems, at multiple locations throughout the world. Its campus in Schenectady, New York was designated a National Historic Landmark in 1975.
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👉 General Electric Research Laboratory in the context of GE Global Research
GE Aerospace Research, formerly GE Research, is the research and development division of GE Aerospace. Before 2024, it was a division of the General Electric Company, which split three ways between 2023 and 2024 and pivoted to aviation.
GE Global Research locations include the Global Research Center in Niskayuna, New York, established as the General Electric Research Laboratory in Schenectady in 1900 and relocated to Niskayuna in 1955 (this site is also known as the Knolls Laboratory, to distinguish it from the original Schenectady location – it is adjacent to the Knolls Atomic Power Laboratory), and the John F. Welch Technology Centre in Bangalore, India, established in 2000.
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General Electric Research Laboratory in the context of Cavity magnetron
The cavity magnetron is a high-power vacuum tube used in early radar systems and subsequently in microwave ovens and in linear particle accelerators. A cavity magnetron generates microwaves using the interaction of a stream of electrons with a magnetic field, while moving past a series of cavity resonators, which are small, open cavities in a metal block. Electrons pass by the cavities and cause microwaves to oscillate within, similar to the functioning of a whistle producing a tone when excited by an air stream blown past its opening. The resonant frequency of the arrangement is determined by the cavities' physical dimensions. Unlike other vacuum tubes, such as a klystron or a traveling-wave tube (TWT), the magnetron cannot function as an amplifier for increasing the intensity of an applied microwave signal; the magnetron serves solely as an electronic oscillator generating a microwave signal from direct-current electricity supplied to the vacuum tube.
The use of magnetic fields as a means to control the flow of an electric current was spurred by the invention of the Audion by Lee de Forest in 1906. Albert Hull of General Electric Research Laboratory, USA, began development of magnetrons to avoid de Forest's patents, but these were never completely successful. Other experimenters picked up on Hull's work and a key advance, the use of two cathodes, was introduced by Habann in Germany in 1924. Further research was limited until Okabe's 1929 Japanese paper noting the production of centimeter-wavelength signals, which led to worldwide interest. The development of magnetrons with multiple cathodes was proposed by A. L. Samuel of Bell Telephone Laboratories in 1934, leading to designs by Postumus in 1934 and Hans Hollmann in 1935. Production was taken up by Philips, General Electric Company (GEC), Telefunken and others, limited to perhaps 10 W output. By this time the klystron was producing more power and the magnetron was not widely used, although a 300 W device was built by Aleksereff and Malearoff in the USSR in 1936 (published in 1940).
General Electric Research Laboratory in the context of William D. Coolidge
William David Coolidge (/ˈkuːlɪdʒ/; October 23, 1873 – February 3, 1975) was an American physicist and engineer, who made major contributions to X-ray machines. He was the director of the General Electric Research Laboratory and a vice-president of the corporation. He was also famous for the development of "ductile tungsten", which is important for the incandescent light bulb.